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3 years ago

How do you find the formula for potassium citrate? I need the steps

1 answer:

8 0

Potassium citrate (also known as tripotassium citrate) is a potassium salt of citric acid with the molecular formula K3C6H5O7.

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Help me plz promise I will mark u the brainiest

Sloan [31]

atom x is sodium and then the atom y is chlorine

8 0

3 years ago

A 2.10g of unknown monoprotic acid is titrated with 38.10 mL of .265M NaOH. Calculate the molar mass of the ac? I already calcul

Shkiper50 [21]

$V_{NaOH}=38,1mL=0,0381L\\
C_{m}=0,265M\\\\
n=C_{m}*V=0,265\frac{mol}{L}*0,0381L\approx0,0101mol$

HR + NaOH ⇒ NaR + H₂O
1mol : 1mol

$0,0101mol \ \ \ \ \Rightarrow \ \ \ \ 2,1g\\
1mol \ \ \ \ \ \ \ \ \ \ \Rightarrow \ \ \ m\\\\
m=\frac{1mol*2,1g}{0,0101mol}\approx 207,92g\\\\
M_{HR}=207,92\frac{g}{mol}$

5 0

3 years ago

Hydrogen sulfate reacts with water to produce sulfate ions and hydronium ions: hso4−+h2o⇌so42−+h3o+ identify the conjugate acid-

Angelina_Jolie [31]

The generic equation for a reaction between an acid and water is

$HX_{(aq)} + H_{2}O_{(aq)} --> X_{(aq)}^{-} + H_{3}O_{(aq)}^+$

When an acid "reacts" with water, water acts as the base that accepts the proton (H+) from the acid. The remaining ion that is formed after the acid has donated its proton is called the conjugate base ( $X^-$ ), and the conjugate acid-base pair is $HX$ - $X^-$ .

Hydrogen sulfate ( $HSO_{4}^-$ ) is an ion from sulfuric acid. It is still an acid in itself and can "react" with water (( $H_{2}O$ ) to form the sulfate ( $SO_{4}^2-$ ) and hydronium ( $H_{3}O^+$ )ions.

$HSO_{4(aq)}^{-} + H_{2}O_{(aq)} --> SO_{4(aq)}^{2-} + H_{3}O_{(aq)}^+$

Based on the previous discussion, $SO_{4(aq)}^2-$ is identified to be the conjugate of the acid $HSO_{4(aq)}^-$ . Thus, the conjugate acid-base pair is $HSO_{4(aq)}^{-} - SO_{4(aq)}^{2-}$ .

8 0

3 years ago

A student is investigating the pH of a substance. The pH of the unknown substance is 5.4. Which of the following substances is t

zimovet [89]

Answer:

<u><em>Substance A.</em></u>

Explanation:

pH is a measure of the concentration of H₃O⁺ ions in a solution.

It is defined as:

$pH=\log \dfrac{1}{[H_3O^+]}=-\log [H_3O^+]$

For the given substances

Sustance [H₃O⁺] pH = - log [H₃O⁺]

A 4×10⁻⁶ -log (4×10⁻⁶) = 5.4 ← answer

B 6×10⁻⁷ -log (6×10⁻⁷) = 6.2

C error - - - - - -

D 1.3×10⁻¹ -log (1.3×10⁻¹) = 0.89

Thus, the unknown substace most likely is A.

3 0

3 years ago

16. Which element has th17. Magnesium, Mg, tends to form a +2 ion. Which will have the larger atomic radius? Mg or Mg2+ (Explain

SashulF [63]

Answer:

Th is the symbol for element Thorium.

Mg is magnesium while Mg 2+ is magnesium Ion. Judging from periodic trends, atomic radius is one half the distance between the atoms of two covalently bonded atoms. It decreases as elevtrons are added to valence shells. That means, across the period it increases and down the group it decreases. Making Mg2+ smaller.

Electronegativity is the energy needed to take an electron in the gaseous state. Florine is more electron negative that lithium. It increases across the period and decreases down the group. Except in the Noble group.

Explanation:

6 0

4 years ago